State of Michigan1990 Census Tracts from the Michigan Geographic Framework (MGF) base map. Census tracts are small areas created for statistical purposes that usually average about 4000 people. More MetadataArcGIS DynamicMapLayerhttps://hub.arcgis.com/datasets/bba3a02d34df442cb326a28baa900419_18engState of Michigan Open Data PortalPublic1990 Census Tracts [Michigan]Web servicesMichigan1990